File: memmove.c

package info (click to toggle)
gettext 0.21-4
  • links: PTS
  • area: main
  • in suites: bullseye
  • size: 133,492 kB
  • sloc: ansic: 516,617; sh: 53,532; perl: 17,889; makefile: 9,060; lisp: 3,210; yacc: 1,032; cpp: 704; java: 615; cs: 554; objc: 337; awk: 79; tcl: 63; sed: 55; xml: 40; pascal: 11; php: 7
file content (26 lines) | stat: -rw-r--r-- 680 bytes parent folder | download | duplicates (32) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
 
/* memmove.c -- copy memory.
   Copy LENGTH bytes from SOURCE to DEST.  Does not null-terminate.
   In the public domain.
   By David MacKenzie <djm@gnu.ai.mit.edu>.  */

#include <config.h>

#include <stddef.h>

void *
memmove (void *dest0, void const *source0, size_t length)
{
  char *dest = dest0;
  char const *source = source0;
  if (source < dest)
    /* Moving from low mem to hi mem; start at end.  */
    for (source += length, dest += length; length; --length)
      *--dest = *--source;
  else if (source != dest)
    {
      /* Moving from hi mem to low mem; start at beginning.  */
      for (; length; --length)
        *dest++ = *source++;
    }
  return dest0;
}